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POVarious Python datetime issues
 

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    <p>I have two methods that I'm using as custom tags in a template engine:</p> <pre><code># Renders a &lt;select&gt; form field def select_field(options, selected_item, field_name): options = [(str(v),str(v)) for v in options] html = ['&lt;select name="%s"&gt;' % field_name] for k,v in options: tmp = '&lt;option ' if k == selected_item: tmp += 'selected ' tmp += 'value="%s"&gt;%s&lt;/option&gt;' % (k,v) html.append(tmp) html.append('&lt;/select&gt;') return '\n'.join(html) # Renders a collection of &lt;select&gt; fields for datetime values def datetime_field(current_dt, field_name): if current_dt == None: current_dt = datetime.datetime.now() day = select_field(range(1, 32), current_dt.day, field_name + "_day") month = select_field(range(1, 13), current_dt.month, field_name + "_month") year = select_field(range(datetime.datetime.now().year, datetime.datetime.now().year + 10), current_dt.year, field_name + "_year") hour = select_field(range(1, 13), current_dt.hour, field_name + "_hour") minute = select_field(range(1, 60), current_dt.minute, field_name + "_minute") period = select_field(['AM', 'PM'], 'AM', field_name + "_period") return "\n".join([day, '/', month, '/', year, ' at ', hour, ':', minute, period]) </code></pre> <p>As you can see in the comments, I'm attempting to generate select fields for building a date and time value.</p> <p>My first question is, how do I make the day, month, hour, and minute ranges use two digits? For example, the code generates "1, 2, 3..." while I would like "01, 02, 03".</p> <p>Next, when the fields get generated, the values of the supplied datetime are not selected automatically, even though I'm telling the select_field method to add a "selected" attribute when the value is equal to the supplied datetime's value.</p> <p>Finally, how do I get the 12-hour period identifier (AM/PM) for the supplied datetime? For the moment, I'm simply selecting 'AM' by default, but I would like to supply this value from the datetime itself.</p>
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